45821490 has 96 divisors (see below), whose sum is σ = 130310208. Its totient is φ = 10243200.

The previous prime is 45821471. The next prime is 45821491. The reversal of 45821490 is 9412854.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (45821491) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46705 + ... + 47675.

It is an arithmetic number, because the mean of its divisors is an integer number (1357398).

Almost surely, 2^45821490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45821490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65155104).

45821490 is an abundant number, since it is smaller than the sum of its proper divisors (84488718).

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

45821490 is a wasteful number, since it uses less digits than its factorization.

45821490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 45821490 is about 6769.1572592162. The cubic root of 45821490 is about 357.8407008468.

The spelling of 45821490 in words is "forty-five million, eight hundred twenty-one thousand, four hundred ninety".