70729424 has 10 divisors (see below), whose sum is σ = 137038290. Its totient is φ = 35364704.

The previous prime is 70729409. The next prime is 70729427. The reversal of 70729424 is 42492707.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 67240000 + 3489424 = 8200^2 + 1868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70729427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210279 + ... + 2210310.

It is an arithmetic number, because the mean of its divisors is an integer number (13703829).

Almost surely, 2^70729424 is an apocalyptic number.

It is an amenable number.

70729424 is a deficient number, since it is larger than the sum of its proper divisors (66308866).

70729424 is a wasteful number, since it uses less digits than its factorization.

70729424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420597 (or 4420591 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 70729424 is about 8410.0787154461. The cubic root of 70729424 is about 413.5550931643. Note that the first 3 decimals are identical.

The spelling of 70729424 in words is "seventy million, seven hundred twenty-nine thousand, four hundred twenty-four".