40148928 has 84 divisors (see below), whose sum is σ = 117828568. Its totient is φ = 13063680.

The previous prime is 40148923. The next prime is 40148939. The reversal of 40148928 is 82984104.

It is a super-2 number, since 2×40148928² = 3223872839098368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40148892 and 40148901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40148923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23958 + ... + 25578.

Almost surely, 2^40148928 is an apocalyptic number.

40148928 is a gapful number since it is divisible by the number (48) 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 40148928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58914284).

40148928 is an abundant number, since it is smaller than the sum of its proper divisors (77679640).

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

40148928 is a wasteful number, since it uses less digits than its factorization.

40148928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 40148928 is about 6336.3181738293. The cubic root of 40148928 is about 342.4191024950.

The spelling of 40148928 in words is "forty million, one hundred forty-eight thousand, nine hundred twenty-eight".