45943240 has 128 divisors (see below), whose sum is σ = 125337600. Its totient is φ = 14826240.

The previous prime is 45943237. The next prime is 45943243. The reversal of 45943240 is 4234954.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45943237) and next prime (45943243).

It is a super-2 number, since 2×45943240² = 4221562603395200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (45943243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581521 + ... + 581599.

It is an arithmetic number, because the mean of its divisors is an integer number (979200).

Almost surely, 2^45943240 is an apocalyptic number.

45943240 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 45943240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62668800).

45943240 is an abundant number, since it is smaller than the sum of its proper divisors (79394360).

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

45943240 is a wasteful number, since it uses less digits than its factorization.

45943240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 45943240 is about 6778.1442888153. The cubic root of 45943240 is about 358.1573541284.

The spelling of 45943240 in words is "forty-five million, nine hundred forty-three thousand, two hundred forty".