19077990 has 32 divisors (see below), whose sum is σ = 46003680. Its totient is φ = 5063424.

The previous prime is 19077979. The next prime is 19078013. The reversal of 19077990 is 9977091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5482 + ... + 8258.

It is an arithmetic number, because the mean of its divisors is an integer number (1437615).

Almost surely, 2^19077990 is an apocalyptic number.

19077990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19077990 is an abundant number, since it is smaller than the sum of its proper divisors (26925690).

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

19077990 is a wasteful number, since it uses less digits than its factorization.

19077990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 35721, while the sum is 42.

The square root of 19077990 is about 4367.8358485639. The cubic root of 19077990 is about 267.2047693431.

The spelling of 19077990 in words is "nineteen million, seventy-seven thousand, nine hundred ninety".