23101428 has 48 divisors (see below), whose sum is σ = 62778240. Its totient is φ = 6474624.

The previous prime is 23101387. The next prime is 23101439. The reversal of 23101428 is 82410132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1858 + ... + 7046.

It is an arithmetic number, because the mean of its divisors is an integer number (1307880).

Almost surely, 2^23101428 is an apocalyptic number.

23101428 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 23101428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31389120).

23101428 is an abundant number, since it is smaller than the sum of its proper divisors (39676812).

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

23101428 is a wasteful number, since it uses less digits than its factorization.

23101428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5256 (or 5254 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 23101428 is about 4806.3944906759. The cubic root of 23101428 is about 284.8041251822.

The spelling of 23101428 in words is "twenty-three million, one hundred one thousand, four hundred twenty-eight".