63019920 has 40 divisors (see below), whose sum is σ = 195362496. Its totient is φ = 16805248.

The previous prime is 63019919. The next prime is 63019927. The reversal of 63019920 is 2991036.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (63019927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131052 + ... + 131531.

Almost surely, 2^63019920 is an apocalyptic number.

63019920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63019920 is an abundant number, since it is smaller than the sum of its proper divisors (132342576).

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

63019920 is a wasteful number, since it uses less digits than its factorization.

63019920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262599 (or 262593 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 63019920 is about 7938.5086760676. The cubic root of 63019920 is about 397.9476543701.

The spelling of 63019920 in words is "sixty-three million, nineteen thousand, nine hundred twenty".