74919830 has 16 divisors (see below), whose sum is σ = 135248400. Its totient is φ = 29880672.

The previous prime is 74919829. The next prime is 74919851. The reversal of 74919830 is 3891947.

It is a happy number.

It is a super-2 number, since 2×74919830² = 11225961854457800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7244 + ... + 14223.

It is an arithmetic number, because the mean of its divisors is an integer number (8453025).

Almost surely, 2^74919830 is an apocalyptic number.

74919830 is a deficient number, since it is larger than the sum of its proper divisors (60328570).

74919830 is a wasteful number, since it uses less digits than its factorization.

74919830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21823.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 74919830 is about 8655.6241831540. The cubic root of 74919830 is about 421.5660168639.

The spelling of 74919830 in words is "seventy-four million, nine hundred nineteen thousand, eight hundred thirty".