73990770 has 64 divisors (see below), whose sum is σ = 211783680. Its totient is φ = 16175808.

The previous prime is 73990757. The next prime is 73990799. The reversal of 73990770 is 7709937.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2830 + ... + 12489.

It is an arithmetic number, because the mean of its divisors is an integer number (3309120).

Almost surely, 2^73990770 is an apocalyptic number.

73990770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

73990770 is an abundant number, since it is smaller than the sum of its proper divisors (137792910).

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

73990770 is a wasteful number, since it uses less digits than its factorization.

73990770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15359.

The product of its (nonzero) digits is 83349, while the sum is 42.

The square root of 73990770 is about 8601.7887674599. The cubic root of 73990770 is about 419.8161894094.

The spelling of 73990770 in words is "seventy-three million, nine hundred ninety thousand, seven hundred seventy".