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23975028 = 2234711312
BaseRepresentation
bin101101101110…
…1010001110100
31200010001120000
41123131101310
522114200103
62213511300
7410533020
oct133352164
950101500
1023975028
1112595880
128042530
134c7580c
143281380
152188aa3
hex16dd474

23975028 has 180 divisors, whose sum is σ = 80742816. Its totient is φ = 6026400.

The previous prime is 23975023. The next prime is 23975033. The reversal of 23975028 is 82057932.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23975023) and next prime (23975033).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23974983 and 23975001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23975023) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 773373 + ... + 773403.

Almost surely, 223975028 is an apocalyptic number.

23975028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23975028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40371408).

23975028 is an abundant number, since it is smaller than the sum of its proper divisors (56767788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23975028 is a wasteful number, since it uses less digits than its factorization.

23975028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 23975028 is about 4896.4301281648. The cubic root of 23975028 is about 288.3498352976.

It can be divided in two parts, 239750 and 28, that added together give a triangular number (239778 = T692).

The spelling of 23975028 in words is "twenty-three million, nine hundred seventy-five thousand, twenty-eight".