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BaseRepresentation
bin101011110111…
…1001111000000
31121021112001212
41113233033000
521342000000
62140545252
7366332252
oct127571700
947245055
1023000000
1111a8a271
127852228
1349c3a8a
1430a9cd2
152044c35
hex15ef3c0

23000000 has 98 divisors (see below), whose sum is σ = 59530488. Its totient is φ = 8800000.

The previous prime is 22999993. The next prime is 23000009. The reversal of 23000000 is 32.

Adding to 23000000 its reverse (32), we get a palindrome (23000032).

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23000009) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 999989 + ... + 1000011.

Almost surely, 223000000 is an apocalyptic number.

23000000 is a gapful number since it is divisible by the number (20) 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 23000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29765244).

23000000 is an abundant number, since it is smaller than the sum of its proper divisors (36530488).

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

23000000 is an frugal number, since it uses more digits than its factorization.

23000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 5.

The square root of 23000000 is about 4795.8315233127. The cubic root of 23000000 is about 284.3866979852.

The spelling of 23000000 in words is "twenty-three million", and thus it is an aban number and an uban number.