70528990 has 16 divisors (see below), whose sum is σ = 145088352. Its totient is φ = 24181344.

The previous prime is 70528981. The next prime is 70529009. The reversal of 70528990 is 9982507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503709 + ... + 503848.

It is an arithmetic number, because the mean of its divisors is an integer number (9068022).

Almost surely, 2^70528990 is an apocalyptic number.

70528990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70528990 is an abundant number, since it is smaller than the sum of its proper divisors (74559362).

70528990 is a wasteful number, since it uses less digits than its factorization.

70528990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007571.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 70528990 is about 8398.1539638185. The cubic root of 70528990 is about 413.1640775676.

The spelling of 70528990 in words is "seventy million, five hundred twenty-eight thousand, nine hundred ninety".