45404280 has 128 divisors (see below), whose sum is σ = 160315200. Its totient is φ = 11390976.

The previous prime is 45404279. The next prime is 45404299. The reversal of 45404280 is 8240454.

45404280 is a `hidden beast` number, since 4 + 540 + 42 + 80 = 666.

It is a super-3 number, since 3×45404280³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17124 + ... + 19596.

Almost surely, 2^45404280 is an apocalyptic number.

45404280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45404280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80157600).

45404280 is an abundant number, since it is smaller than the sum of its proper divisors (114910920).

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

45404280 is a wasteful number, since it uses less digits than its factorization.

45404280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2500 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 45404280 is about 6738.2698075990. The cubic root of 45404280 is about 356.7513274246.

The spelling of 45404280 in words is "forty-five million, four hundred four thousand, two hundred eighty".