76428459 has 24 divisors (see below), whose sum is σ = 112050432. Its totient is φ = 50196480.

The previous prime is 76428449. The next prime is 76428461. The reversal of 76428459 is 95482467.

It is a happy number.

It is not a de Polignac number, because 76428459 - 2¹¹ = 76426411 is a prime.

It is a super-2 number, since 2×76428459² = 11682618690229362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76428409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297259 + ... + 297515.

It is an arithmetic number, because the mean of its divisors is an integer number (4668768).

Almost surely, 2^76428459 is an apocalyptic number.

76428459 is a deficient number, since it is larger than the sum of its proper divisors (35621973).

76428459 is a wasteful number, since it uses less digits than its factorization.

76428459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 624 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 76428459 is about 8742.3371589067. The cubic root of 76428459 is about 424.3768658165.

The spelling of 76428459 in words is "seventy-six million, four hundred twenty-eight thousand, four hundred fifty-nine".