19935090 has 48 divisors (see below), whose sum is σ = 59237568. Its totient is φ = 4556448.

The previous prime is 19935079. The next prime is 19935103. The reversal of 19935090 is 9053991.

19935090 = 375² + 376² + ... + 482².

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15192 + ... + 16451.

It is an arithmetic number, because the mean of its divisors is an integer number (1234116).

Almost surely, 2^19935090 is an apocalyptic number.

19935090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19935090 is an abundant number, since it is smaller than the sum of its proper divisors (39302478).

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

19935090 is a wasteful number, since it uses less digits than its factorization.

19935090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31663 (or 31660 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 19935090 is about 4464.8728985269. The cubic root of 19935090 is about 271.1477886541.

The spelling of 19935090 in words is "nineteen million, nine hundred thirty-five thousand, ninety".