70381904 has 60 divisors (see below), whose sum is σ = 149835648. Its totient is φ = 31987200.

The previous prime is 70381903. The next prime is 70381907. The reversal of 70381904 is 40918307.

It is a super-2 number, since 2×70381904² = 9907224821330432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70381903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143099 + ... + 143589.

Almost surely, 2^70381904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70381904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74917824).

70381904 is an abundant number, since it is smaller than the sum of its proper divisors (79453744).

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

70381904 is a wasteful number, since it uses less digits than its factorization.

70381904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 70381904 is about 8389.3923498666. The cubic root of 70381904 is about 412.8766640959.

The spelling of 70381904 in words is "seventy million, three hundred eighty-one thousand, nine hundred four".