19950540 has 24 divisors (see below), whose sum is σ = 55861680. Its totient is φ = 5320128.

The previous prime is 19950527. The next prime is 19950563. The reversal of 19950540 is 4505991.

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, 166195 + ... + 166314.

It is an arithmetic number, because the mean of its divisors is an integer number (2327570).

Almost surely, 2^19950540 is an apocalyptic number.

19950540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19950540 is an abundant number, since it is smaller than the sum of its proper divisors (35911140).

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

19950540 is a wasteful number, since it uses less digits than its factorization.

19950540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332521 (or 332519 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 19950540 is about 4466.6027358609. The cubic root of 19950540 is about 271.2178184619.

The spelling of 19950540 in words is "nineteen million, nine hundred fifty thousand, five hundred forty".