45919980 has 48 divisors (see below), whose sum is σ = 142863840. Its totient is φ = 12245184.

The previous prime is 45919943. The next prime is 45920003. The reversal of 45919980 is 8991954.

45919980 is a `hidden beast` number, since 459 + 199 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 41979 + ... + 43058.

It is an arithmetic number, because the mean of its divisors is an integer number (2976330).

Almost surely, 2^45919980 is an apocalyptic number.

It is an amenable number.

45919980 is an abundant number, since it is smaller than the sum of its proper divisors (96943860).

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

45919980 is a wasteful number, since it uses less digits than its factorization.

45919980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85055 (or 85047 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 45919980 is about 6776.4282627355. The cubic root of 45919980 is about 358.0969016632.

The spelling of 45919980 in words is "forty-five million, nine hundred nineteen thousand, nine hundred eighty".