70386738 has 16 divisors (see below), whose sum is σ = 141562080. Its totient is φ = 23330816.

The previous prime is 70386731. The next prime is 70386761. The reversal of 70386738 is 83768307.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 70386738.

It is not an unprimeable number, because it can be changed into a prime (70386731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31695 + ... + 33842.

It is an arithmetic number, because the mean of its divisors is an integer number (8847630).

Almost surely, 2^70386738 is an apocalyptic number.

70386738 is an abundant number, since it is smaller than the sum of its proper divisors (71175342).

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

70386738 is a wasteful number, since it uses less digits than its factorization.

70386738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65721.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 70386738 is about 8389.6804468347. The cubic root of 70386738 is about 412.8861163367.

The spelling of 70386738 in words is "seventy million, three hundred eighty-six thousand, seven hundred thirty-eight".