70904020 has 48 divisors (see below), whose sum is σ = 164094336. Its totient is φ = 25520000.

The previous prime is 70903999. The next prime is 70904069. The reversal of 70904020 is 2040907.

70904020 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

70904020 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 70903982 and 70904000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20625 + ... + 23815.

It is an arithmetic number, because the mean of its divisors is an integer number (3418632).

Almost surely, 2^70904020 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 70904020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82047168).

70904020 is an abundant number, since it is smaller than the sum of its proper divisors (93190316).

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

70904020 is a wasteful number, since it uses less digits than its factorization.

70904020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312 (or 3310 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 70904020 is about 8420.4524819038. The cubic root of 70904020 is about 413.8951012752.

Adding to 70904020 its reverse (2040907), we get a palindrome (72944927).

The spelling of 70904020 in words is "seventy million, nine hundred four thousand, twenty".