74921294 has 24 divisors (see below), whose sum is σ = 137613960. Its totient is φ = 30418416.

The previous prime is 74921291. The next prime is 74921299. The reversal of 74921294 is 49212947.

It is a super-2 number, since 2×74921294² = 11226400589268872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74921291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18257 + ... + 21980.

It is an arithmetic number, because the mean of its divisors is an integer number (5733915).

Almost surely, 2^74921294 is an apocalyptic number.

74921294 is a deficient number, since it is larger than the sum of its proper divisors (62692666).

74921294 is a wasteful number, since it uses less digits than its factorization.

74921294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40272 (or 40265 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 74921294 is about 8655.7087520318. The cubic root of 74921294 is about 421.5687627708.

The spelling of 74921294 in words is "seventy-four million, nine hundred twenty-one thousand, two hundred ninety-four".