258502428 has 144 divisors (see below), whose sum is σ = 731867136. Its totient is φ = 79548480.

The previous prime is 258502427. The next prime is 258502441. The reversal of 258502428 is 824205852.

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 = 258502392 and 258502401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258502427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 692850 + ... + 693222.

Almost surely, 2^258502428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258502428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365933568).

258502428 is an abundant number, since it is smaller than the sum of its proper divisors (473364708).

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

258502428 is a wasteful number, since it uses less digits than its factorization.

258502428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 258502428 is about 16078.0106978444. The cubic root of 258502428 is about 637.0226516560.

The spelling of 258502428 in words is "two hundred fifty-eight million, five hundred two thousand, four hundred twenty-eight".